question_answer 15)

The total cost c(x) in rupees associated with the production of x untis of an item is given by C(x) = 0.007 x3 – 0.003 x2 + 15x +4000. Find the marginal cost when 17 units are produced. 

Answer:

       Marginal cost        = 0.021x2 ? 0.006 x + 15             = 6.069 ?0.102 + 15 = 20.967       .